Determining Wear on Ceramic Brakes:: Chamfer

WARNING: This page is about a different car, the 2023 Audi SQ8, 2023 Audi RS Q8, and 2023 Audi Q8. However, it is still accessible from the selected car via links, so may be relevant.

Chamfers -arrow- on the edges of the brake rotor are caused by mechanical damage.

Fig 1: Chips On Edge Of Brake Disc Are Caused By Mechanical Damage

Courtesy of AUDI

The following are permitted:

maximum width/depth = 2 mm.
maximum length = 10 mm
Maximum number of chamfers on the brake rotor = 3

Ceramic brake rotors are to be replaced if any of these criteria are exceeded.

CAUTION:

Risk of accident due to uneven braking.

- Always replace brake rotors on both sides of the axle.

- Also replace the brake pads on both sides of the axle.